This document discusses different data types in C programming language. It covers primary data types which include integer, floating point, character, and void types. Integer types can be signed or unsigned, and of different sizes like short, long, etc. Floating point types store real numbers with precision. Character types usually occupy 1 byte of storage. The document also discusses user-defined data types like structures, unions and arrays. It provides examples of input/output functions like scanf and printf and a short program demonstrating arithmetic operators.

1. VIDYA CLASES
Asstt. Professor
Department of computer science and IT

2.  There are various types of data that a variable may contain in a
programming language . All such types are named as data type
Derived Data
type
Data Types in
c
Primary Data
Types
User
Defined
Data Type

3. Data Types in c
Primary Data Types
User
Defined
Data
types
Derive
d Data
types
Class
Stucure
Union
Array
Function
Pointer

4. Primary Data Types
Integral
type Void
Floating
Point
TYpe
Integer Characte
r
Signed Unsigne
d
Int
Short int
Long int
Unsigned int
Unsigned short
int
Unsigned long
int
Float
Double
Long double
Char
Signed char
Unsigned char

5. Integer Type
Integer are those nos with a range of values supported by a particular machine. Generaly integer occupy one
word of storage.The size of an integer that can be stored depends on the computer.
Integer are of two types 1)signed 2)unsigned
• Short int takes two bytes of memory and long int takes four bytes of the main memory of a computer.
• If we want to declare an integer variable to be non-negative only the use the unsigned
Like unsigned int k, unsigned short m, unsigned long n
Floating point type
Floating point means real nos. Floating point nos. are defined by keyword float. Real nos are stored in 32 bits
with 6 digits precision.The double data type nos uses 64 bits with a precision of 14 digits.
Character type
Characters are usually stored in 8 bits of internal storage.Unsigned char have values between 0 to 255 and
signed char have values from -128 to 127

6. • Using scanf function we can given a values to variables
• The general format of scanf function is
Scanf(“control string”,&variable1,,&varable2…….);
Or scanf(“%f%d%c”,&a,&b,&c);

7. Printf(“control string”,arg1,arg2,….argn)
Eg.
Printf(“values=%d”,n);

8. /*Prog. Explaining basic arithmetic operators*/
#include<stdio.h>
#include<conio.h>
void main()
{
Int x,y;
Int add,sub,div,mul;
X=100;
Y=25;
Add=x+y;
Sub=x-y;
Mul=x*y;
Div=x/y;
Printf(“add=%d”,add);
Printf(“sub=%d”,sub);
Printf(“mult=%d”,mul);
Printf(“div=%d”,div);
getch();

9. Short
int a=20 Long
intb=20
10001 10002
&a=10001 &b=10002

10. THANKS